NIR Dyes Based on [M(R,R′timdt)
<sub>2</sub>
] Metal‐Dithiolenes: Additivity of M, R, and R′ Contributions To Tune the NIR Absorption (M = Ni, Pd, Pt; R,R′timdt = Monoreduced Form of Disubstituted Imidazolidine‐2,4,5‐trithione)
作者:M. Carla Aragoni、Massimiliano Arca、Tiziana Cassano、Carla Denotti、Francesco A. Devillanova、Romina Frau、Francesco Isaia、Francesco Lelj、Vito Lippolis、Luigi Nitti、Pina Romaniello、Raffaele Tommasi、Gaetano Verani
DOI:10.1002/ejic.200200602
日期:2003.5
the aim of preparing new dyes for Q-switching and/or mode-locking Nd-based lasers, such as Nd:YLF and Nd:YAG (emission wavelengths 1053 and 1064 nm, respectively), the syntheses of about 30 new neutral dithiolenemetal complexes belonging to the class [M(R,R′timdt)2] have been carried out [M = Ni (4a−c; 4g−j), Pd (5a−j), Pt (6a−j); R,R′timdt = monoreduced form of disubstituted imidazolidine-2,4,5-trithione]
为了制备用于 Q 开关和/或锁模 Nd 基激光器的新染料,如 Nd:YLF 和 Nd:YAG(发射波长分别为 1053 和 1064 nm),合成了大约 30 种新的中性二硫烯金属属于 [M(R,R'timdt)2] 类的复合物已经进行了 [M = Ni (4a-c; 4g-j), Pd (5a-j), Pt (6a-j); R,R'timdt = 双取代咪唑烷-2,4,5-三硫酮的单还原形式]。通过改变 M、R 和 R' 对强 NIR 吸收的影响的检查已经允许识别中心金属离子和取代基对 λM、R、R'max 的附加贡献 (Δλ) NIR 吸收最大值的位置,在 1000 nm 范围内。已通过对模型化合物 [Ni(H2timdt)(Ph,H-timdt)] 进行的混合 DFT 计算阐明了由于芳族取代基导致的高 Δλ 值。λM、R、R'max 值和摩尔消光系数都随溶剂而变化。复合物 5f [M